hb28b128mm2 Renesas Electronics Corporation., hb28b128mm2 Datasheet - Page 22

• Manufacturer Part Number: hb28b128mm2
• Description: Multimediacard 16 Mbyte/32 Mbyte/64 Mbyte/128 Mbyte
• Manufacturer: Renesas Electronics Corporation.

HB28H016/D032/B064/B128MM2
• WRITE_BLK_PARTIAL
WRITE_BLK_PARTIAL defines whether partial block sizes can be used in block read and block write
commands. WRITE_BLK_PARTIAL = 0 means that only the block size defined by WRITE_BLK_LEN
can be used for block-oriented data transfers. WRITE_BLK_PARTIAL = 1 means that smaller blocks can
be used as well. The minimum block size will be equal to minimum addressable unit (one byte). These
Hitachi MultiMediaCards support no partial block write. The parameter WRITE_BLK_PARTIAL is
permanently assigned to the value ‘0’.
• FILE_FORMAT_GRP
Indicates the selected group of file formats. The default value is ‘0’. This field is read-only for ROM. The
usage of this field is shown in table “File_Formats”.
• COPY
Defines if the contents are an original (COPY = ‘0’) or a copy (= ‘1’). The COPY bit is a one time
programmable bit, being set by the customer. The default value is ‘0’.
• PERM_WRITE_PROTECT
Permanently protects the whole card content against overwriting or erasing (all write and erase commands
for this card is a permanently disabled). This parameter is one-time programmable by the customer. The
default value is ‘0’ (not protected).
• TMP_WRITE_PROTECT
Temporarily protects the whole card content from being overwritten or erased (all write and erase
commands for this card are temporarily disabled). This parameter is programmable by the customer. The
default value is ‘0’ (not protected).
• FILE_FORMAT
Indicates the file format on the card. The default value is ‘0’. This field is read-only for ROM. The
following formats are defined:
File_Formats
FILE_FORMAT_GRP
0
0
0
0
1
Rev.5.0, Jan. 2003, page 20 of 88
FILE_FORMAT Type
0
1
2
3
0, 1, 2, 3
Hard disk-like file system with partition table
DOS FAT (floppy-like) with boot sector only (no partition table)
Universal File Format
Others/Unknown
Reserved